A51B20525-1: NUT,PLAIN,DODECAGON.
The NUT,PLAIN,DODECAGON is a the manufacturer industrial component. Key specifications include material: STEEL COMP 630 OVERALL, nut_style: PLAIN, DODECAGON, nut_height: 0.312 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC), hardness_rating: 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM. This part is cataloged in the U.S.
Government catalog under NSN 5310-00-003-3887, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.
Verify compatibility with your specific system configuration before ordering.
| material | STEEL COMP 630 OVERALL |
| nut_style | PLAIN, DODECAGON |
| nut_height | 0.312 INCHES NOMINAL IN |
| thread_class | 3B |
| thread_series | UNIFIED NATIONAL COARSE (UNC) |
| hardness_rating | 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM |
| special_features | PREVAILING TORQUE ALL METAL DESIGN LOCKING FEATURE |
| thread_direction | RIGHT-HAND |
| countersink_angle | 90.0 DEGREES NOMINAL NUT |
| surface_treatment | PASSIVATE OVERALL |
| width_across_flats | 2.062 INCHES NOMINAL IN |
| nominal_thread_size | 0.562 INCHES IN |
| NSN | 5310-00-003-3887 |
| WIDTH ACROSS FLATS | 2.062 INCHES NOMINAL IN |
| BEARING SURFACE FINISH | 125.0 MICROINCHES |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |
| HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| NOMINAL THREAD SIZE | 0.562 INCHES IN |
| NUT HEIGHT | 0.312 INCHES NOMINAL IN |
| SPECIAL FEATURES | PREVAILING TORQUE ALL METAL DESIGN LOCKING FEATURE |
No substitute or cross-reference records for this part.